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entre@ straws PATENT ernten.

WILLIAM FIELD, 0F PROVIDENCE, RHODE ISLAND.

HORSE-POWER MACHINE.

Specification ofLetters Patent No. 24,291, dated June 7, 1859.

To all whom 'it may concern:

Be it known that I, WM. FIELD, of the city and county of Providence andState of Rhode Island, have invented certain new and useful Improvementsin Horse-Powers, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming`part of this specification, in which- Figure l, represents aperspective view of a horse power embracing my improvements. Fig. 2represents a sectional elevation of the same, on the line as a2 of Fig.l. Fig. 3 represents an end elevation of the same.

The utility of horse powers as an economical motor, depends in a greatdegree on their simplicity, upon the perfection of the arrangement ofthe moving parts, and upon sustaining and connecting'these parts withthe frame and with each other, so that they will not be easily displacedand bind upon each other, and thus create friction and rapidly wear outaIn the general arrangement and construction of the horse powersheretofore invented,

these prerequisites to their perfection havey to a great degree beenoverlooked; hencefew of these machines have been found available as aneconomical motor, because in their construction and arrangement, thoseparts on which there is the greatest strain, are so arranged as torender it impossible to give them an adequate support. Therefore thesemachines are continually getting out of order after being a short timein use, and the friction between the moving parts becomes so great, thata large portion of the power applied to operating the machine, isexpended in overcoming the friction.

The object of my improvements in horsepowers is to remedy these defects,and my invention for effecting this object consists in so arranging themain driving shaft, that the driven shaft passes through and turns inthe same direction as the driver, while at the same time the driver issupported permanently by boxes at both ends, and the bearing of theinterior shaft is only on that point of the driver, directly oppositeAthe bearing of its journal in the top plate of the frame, by which themain shaft is fully supported, so that it cannot be easily displaced,and the shaft passing through. so arranged that any slight yielding ofeither shaft will not cause them to bind upon each ings, my improvementsas applied to horsepowers will be fully understood.

The horse power embracing my improvements consists of a strong ironframe .com-

posed of two plates-A and B-placed at convenient distance apart toaccommodate the mechanism, and supported by columns at the four cornersthe extension of which below the bed plate, forms the feet on which themachine stands. The ends of the frame are partially closed by a panel(a) to give to 1t greater strength and stiffness.

The opposite parts of the machine consist of a main driving cog wheel(C) which is fast to a hollow shaft or sleeve (S) having its upperbearing in the top plate and its lower bearing on a step (7c) in the endof a bracket extending from the end panel; and through the bottom ofthis step is an opening of the same diameter as the interior of thesleeve. A second shaft (c) the end bearings of which are in the top andbott-om plates, has attached to it a pinion (c) which gears into themain driving wheel, and it also carries a driving cog wheel (D) whichgears into a pinion (e) on a shaft (H) which passes through the step(le) and through the center' of the hollow main shaft, and extends somedistance above it. The lower bearing of this shaft is in the lower platethrough which it extends below the bottom plate of the frame, and alsocarries at its lower end a beveled toothed wheel chinery may be takenfrom either or both ends of this shaft.

The interior diameter of the main driving shaft (S) and also the openingthrough its step is greater than the diameter of the driven shaftpassing through it, wit-h a free space between both shafts, exceptdirectly opposite the bearing of the journal of the hollow shaft in theupper plate, at which 'point the interior diameter of the hollow Thusthe power to drive ma- 1??.` i Y V24,291-

(E) above andthe other (F) below the frame are supported by proper boxesSlg) and carry at one end a beveled pinion which gears into the beveledtoothed wheels on either side of the vertical shaft passing Y throughthe main driver, and transmits Inotion in a horizontal direction fromthe horse power. The upper end of the main driver isprovided with sweeps(Gr) to which the horses or other draft Vanimals employed to turn themachine are harnessed. i

VIt will be seen from the arrangement of the gearing for multiplying thepower that the shaft from which the power is taken passesthrough themain driving shaft, and that both turn in` the same direction. Thisarrangement not only simplifies the machine, but from both shaftsturning in the same direction the friction is materially diminished. Inarranging the upper bearing for the shaft passing through the center ofthe main driving shaft opposite the bearing of the driver in the upperVplates of the frame, and leaving free space between bothshafts below,and also supporting the lower end'of the main driver by the hollow step,the liability of either of these shafts, which are subjected 'to heavystrains, especially the main drivers being displaced so as to lbind oneach other, isgreatly diminished.

' Having thus described my improvements in horse powers, what I claimtherein as new, and desire to secure by Letters Patent s- Arranging andsupport-ing a hollow driving shaft and the driven shaft passing throughthe driver substantially as described, wherebyboth driver and drivenshaftturn in the same direction, and both ends of the` driver are ,fullysupported by boxes, independent of the shaft passing through it, whileat thesame time the bearing of the shaft passing through the hollowdriver, will be on the driver only at a point directlyopposite itsjournal, so that any slight dis# placement of either shaft will notcause them to bind on each other so as to increase the friction of themachine.

In testimony whereof I have subscribed my name.

WM. FIELD.

Witnesses: Y WM. BINNEY, ARTHUR F. DEXTER.

